U.S. Citizenship is Required. Ability to qualify for a US Department of Defense security clearance required. Candidate must be SAP and SCI program eligible. Toyon Research Corporation is an industry leader in the areas of complex space and missile systems analysis, aerothermodynamics, payload design and development, and ground and flight testing. Our Aerospace Systems Group provides innovative technical solutions to support aerospace programs for the Department of Defense (DoD) and their agenci